Set max image size setting from options.

Correct default value in options documentation.

src/utils/Settings.ts

@@ -1,19 +1,27 @@
 import {IViewerOptions} from "../Viewer";
+import {ImageSize} from "../Viewer";
 
 export class Settings {
     private static _baseImageSize: number;
+    private static _maxImageSize: number;
 
     public static setOptions(options: IViewerOptions): void {
-        if (options.baseImageSize) {
-            Settings._baseImageSize = options.baseImageSize;
-        } else {
-            Settings._baseImageSize = 640;
-        }
+        Settings._baseImageSize = options.baseImageSize != null ?
+            options.baseImageSize :
+            ImageSize.Size640;
+
+        Settings._maxImageSize = options.maxImageSize != null ?
+            options.maxImageSize :
+            ImageSize.Size2048;
     }
 
     public static get baseImageSize(): number {
         return Settings._baseImageSize;
     }
+
+    public static get maxImageSize(): number {
+        return Settings._maxImageSize;
+    }
 }
 
 export default Settings;

src/viewer/interfaces/IViewerOptions.ts

@@ -112,7 +112,7 @@ export interface IViewerOptions {
     /**
      * The max size of an image shown in the viewer
      * will be used when user pauses.
-     * @default {ImageSize}
+     * @default {ImageSize.Size2048}
      */
     maxImageSize?: ImageSize;
 }